Ejemplo uso de llamadas al sistema para modificar el sistema de archivos

<syntax lang="c">

1. include <stdio.h>
2. include <stdlib.h>
3. include <string.h>
4. include <sys/types.h>
5. include <sys/stat.h>
6. include <fcntl.h>

int main(void) { char buf[1024] = {}; int fd, numbytes;

fd = open("fichero.txt", O_RDONLY); if (fd < 0) { perror("open"); exit(EXIT_FAILURE); }

numbytes = read(fd, buf, sizeof(buf)); while (numbytes > 0) { write(1, buf, strlen(buf)); numbytes = read(fd, buf, sizeof(buf)); }

close(fd); mkdir("prueba", 0755);

exit(EXIT_SUCCESS); } </syntax>